Madonna will be among the luminaries kicking up their heels on the Croisette at this year's Cannes Film Festival. AmfAR (cq) said Tuesday that Madge will join Cinema Against AIDS chairs Sharon Stone, Harvey Weinstein, Michelle Yeoh, Carine Roitfeld, Chopard's Caroline Gruosi-Scheufele, producer Michel Litvak and amfAR chairman Kenneth Cole at the May 22 gala, presented by Litvak's Bold Films, Chopard and The Weinstein Company. As always, the event will take place at Le Moulin de Mougins and include a formal dinner and a lengthy live auction called by Stone. This year Seal has been tapped to perform, and a clip of the Madonna-produced and narrated film "I Am Because We Are," about AIDS orphans in Malawi, will also be shown. The film will be screened in its entirety at Cannes the night before.